Michael Saylor is a perennial crypto bull.Bitcoin (BTC 3.44%), the world's largest cryptocurrency, has been on a great run this year and has roughly doubled -- well ahead of the bull market and hitting new all-time highs. The token has benefited from the creation of spot Bitcoin exchange-traded funds (ETFs), lower interest rates, and a growing view that the token could be a hedge against inflation.However, Bitcoin may just be getting started, according to MicroStrategy Executive Chaiman and billionaire inve ...